Screw



FIG. 1 is a side view of the screw embodying the new design;

FIG. 2 is a second side view thereof;

FIG. 3 is a third side view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a point end view thereof; and,

FIG. 6 is a close up perspective view thereof.

FIGS. 1-6 show features of a screw in phantom lines. These features are shown for environmental purposes and do not form any part of the claimed design. The phantom lines immediately adjacent to the solid line portions of the design form the boundary of the design, with the phantom lines forming no part of the claimed design. 

The ornamental design for screw, as shown and described. 